ausblenden:
Schlagwörter:
-
Zusammenfassung:
Topological insulators are characterized by an inverted band structure
in the bulk and metallic surface states on the surface. In LaBi, a
semimetal with a band inversion equivalent to a topological insulator,
we observe surface-state-like behavior in the magnetoresistance. The
electrons responsible for this pseudo-two-dimensional transport,
however, originate from the bulk states rather topological surface
states, which is witnessed by the angle-dependent quantum oscillations
of the magnetoresistance and ab initio calculations. As a consequence,
the magnetoresistance exhibits strong anisotropy with large amplitude
(similar to 10(5)%).
